[PATCH] Represent laptop_mode as jiffies internally

Make that the internal value for /proc/sys/vm/laptop_mode is stored as
jiffies instead of seconds.  Let the sysctl interface do the conversions,
instead of doing on-the-fly conversions every time the value is used.

Add a description of the fact that laptop_mode doubles as a flag and a
timeout to the comment above the laptop_mode variable.

Signed-off-by: Bart Samwel <bart@samwel.tk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 817ba25517eb..d13426680d10 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -848,9 +848,8 @@ static ctl_table vm_table[] = {
                 .data           = &laptop_mode,
                 .maxlen         = sizeof(laptop_mode),
                 .mode           = 0644,
-                .proc_handler   = &proc_dointvec,
-                .strategy       = &sysctl_intvec,
-                .extra1         = &zero,
+                .proc_handler   = &proc_dointvec_jiffies,
+                .strategy       = &sysctl_jiffies,
         },
         {
                 .ctl_name       = VM_BLOCK_DUMP,